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Application filed by Josef Kucera, Vaclav Ing Jetel, Petr Frydl, Futera Miroslav, Barton PetrfiledCriticalJosef Kucera
Priority to CS85521ApriorityCriticalpatent/CS243308B1/en
Publication of CS52185A1publicationCriticalpatent/CS52185A1/en
Publication of CS243308B1publicationCriticalpatent/CS243308B1/en